Belt-dressing.



UNITED STATES PATENT OFFICE.

LEONARD F. DUNCAN, OF TROY, OHIO.

BELT-DRESSING.

SPECIFICATION forming part of Letters Patent No. 653,569, dated July 10,1900.

Application filed March 29, 1900. Serial No. 10,694.. (No specimens.)

To all whom it may concern:

Be it known that I, LEONARD F. DUNCAN, a citizen of the United States,residing at Troy, in the county of Miami and State of Ohio, haveinvented a new and useful Composition of Matter to be Used as a Dressingfor Belts, of which the following is a specification.

My composition consists of the following ingredients, combined in themanner and in the proportions stated"viz., pure tallow, twenty pounds;pure lard, forty pounds; common salt, ten pounds; sugar, ten pounds;rosin, twenty pounds; water, forty pounds'or in Weights of each of likeproportion to the com bined weight of all the said ingredients.

In preparing the composition the tallow and the lard are to be meltedtogether in a vessel. The salt and sugar are thoroughly dissolvedtogether in the water, preferably heated, and the solution is then addedto the melted tallow and lard, at the same time adding the rosin. Thewhole is then allowed to boil for one and one-half hours. When cookedsulficiently, the water is all boiled out and the composition becomes afroth or foam. It is then allowed to cool and when cool is ready foruse. In cooling a sediment amounting to about three per cent. of theentire original ingredients (excepting water) settles to the bottom ofthe vessel, from which the composition is carefully separated whencooled.

The above-named composition is best applied to a belt while it isrunning, whereby it is more evenly distributed over the belt.

By the use of the above composition the adhesion of the belt is greatlyincreased and prevents the belt from slipping under all circumstances,thereby saving power. Furthermore, it makes the belt soft and pliable,ren= ders it waterproof,- and increases the life of the belt.Furthermore, it protects the belt when exposed to steam or acids.Further= more, it removes foreign matter or dirt from the belt.Furthermore, it requires only a. small quantity to have the desiredefiect, thereby rendering its use economical, and, finally, it allowsthe belt to run slack, thereby preventing the heating of journals, whilethe machinery will retain the required speed.

I am aware that tallow and rosin have been used in belt-dressingcompositions; but I am

